Import Issues Deletes OTHER Columns

[Steve Belt]

Using Jira Cloud for Sheets, I imported Columns A through I into Google Sheets. I then added 3 columns (J through L) to perform computations on the imported rows that I need for a pivot table I am creating. This works great!

However, Now I want to refresh the Data (Manually for now, eventually with a schedule). I select my Filter and click GET ISSUES NOW. I am warned that I will be overwriting columns A - I which is fine. But when I click Continue, Columns A - I successfully import BUT columns J - L are now removed.

How do I replace/update columns A - I but leave J - L in place?